Computer Simulations of High Pressure Systems
Numerical methods are capable of solving very difficult problems in solid mechanics and gas dynamics. In the design of engineering structures, critical decisions are possible if the behavior of materials is correctly described in the calculation. Problems of current interest require accurate analysis of stress-strain fields that range from a very small elastic displacement to very large plastic deformation. Described here is a finite difference program that solves problems over this range and in two and three space-dimensions and time. A series of experiments and calculations serve to establish confidence in the plasticity formulation. Then the program can be used to design high pressure systems where plastic flow occurs. The purpose is to identify material properties, strength and elongation, that meet the operating requirements. An objective is to be able to perform destructive testing on a computer rather than on the engineering structure. Examples of topical interest are given.
KeywordsFlow Stress Constitutive Model Tension Test Elastic Limit High Pressure System
Unable to display preview. Download preview PDF.
- 1.M. L. Wilkins, Lawrence Livermore Laboratory, Report URCL-7322, Rev. 1 (1969).Google Scholar
- 2.M. L. Wilkins, R. E. Blum, E. Cronshagen, and P. Grantham, Lawrence Livermore Laboratory, Report UCRL-51574 (1974).Google Scholar
- 4.S. S. Batsanov, in Proceedings of Symposium on the Behavior of Dense Media Under High Dynamic Pressure, Gordon and Breach, New York (1968), p. 371.Google Scholar
- 5.A. A. Deribas, “Explosive Welding,” Report from Institute of Hydrodynamics, Novosibirsk, U.S.S.R. (1967).Google Scholar
- 6.J. Kury, et al., in Proceedings of Fourth Symposium on Detonation, U. S. Naval Ordinance Laboratory and Office of Naval Research, Dept. of Navy (1965), p. 3.Google Scholar
- 9.D. Norris, M. Wilkins, B. Moran, M. Prado, J. Scudder, D. Quinones, and J. Reaugh, Lawrence Livermore Laboratory, Report UCRL-52296 (1977).Google Scholar
- 10.P. W. Bridgman, The Physics of High Pressure, G. Bell and Sons, Ltd., London (1952), Chapt. IV.Google Scholar